cachingprovider.cs

SharpNuke源代码

using System;
using System.Collections;
using System.Web;
using System.Web.Caching;

//
// DotNetNuke -  http://www.dotnetnuke.com
// Copyright (c) 2002-2005
// by Shaun Walker ( [e-mail] ) of Perpetual Motion Interactive Systems Inc. ( http://www.perpetualmotion.ca )
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
// documentation files (the "Software"), to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
// to permit persons to whom the Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or substantial portions
// of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
// TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
// CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//


namespace DotNetNuke.Services.Cache
{
	public abstract class CachingProvider
	{
		#region "Shared/Static Methods"
		
		// singleton reference to the instantiated object
		private static CachingProvider cachingProvider;
		
		// constructor
		static CachingProvider() 
		{
			CreateProvider();
		}
		
		// dynamically create provider
		private static void CreateProvider ()
		{
			cachingProvider = DotNetNuke.Framework.Reflection.CreateObjectNotCached("caching") as CachingProvider;
		}
		
		// return the provider
		public static CachingProvider Instance()
		{
			return cachingProvider;
		}
		
		#endregion
		
		#region "Abstract Methods"
		
		// methods to return functionality support indicators
		public abstract object Add(string key, object value, CacheDependency dependencies, DateTime absoluteExpiration, TimeSpan slidingExpiration, CacheItemPriority priority, CacheItemRemovedCallback onRemoveCallback);
		public abstract IDictionaryEnumerator GetEnumerator();
		public abstract object GetItem(string cacheKey);
		public abstract object GetPersistentCacheItem(string cacheKey, Type type);
		public abstract void Insert (string cacheKey, object o, bool persistAppRestart);
		public abstract void Insert (string cacheKey, object o, CacheDependency dependency, bool persistAppRestart);
		public abstract void Insert (string cacheKey, object o, CacheDependency dependency, DateTime absoluteExpiration, TimeSpan slidingExpiration, bool persistAppRestart);
		public abstract void Insert (string cacheKey, object o, CacheDependency dependency, DateTime absoluteExpiration, TimeSpan slidingExpiration, CacheItemPriority priority, CacheItemRemovedCallback onRemoveCallback, bool persistAppRestart);
		public abstract object Remove(string cacheKey);
		public abstract void RemovePersistentCacheItem (string cacheKey);
		public abstract string PurgeCache();
		
		#endregion
		
	}
	
}